53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef _OB_RAW_EXPR_CHECK_DEP_H
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#define _OB_RAW_EXPR_CHECK_DEP_H 1
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#include "lib/container/ob_bit_set.h"
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#include "lib/container/ob_iarray.h"
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namespace oceanbase {
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namespace sql {
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class ObRawExpr;
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class ObRawExprCheckDep
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{
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public:
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ObRawExprCheckDep(common::ObIArray<ObRawExpr *> &dep_exprs,
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common::ObBitSet<common::OB_MAX_BITSET_SIZE> &deps,
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bool is_access)
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: dep_exprs_(dep_exprs),
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dep_indices_(&deps),
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is_access_(is_access) { }
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virtual ~ObRawExprCheckDep() {}
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/**
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* The starting point
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*/
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int check(const ObRawExpr &expr);
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int check(const ObIArray<ObRawExpr *> &exprs);
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const common::ObBitSet<common::OB_MAX_BITSET_SIZE> *get_dep_indices() const { return dep_indices_; }
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private:
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int check_expr(const ObRawExpr &expr, bool &found);
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private:
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common::ObIArray<ObRawExpr *> &dep_exprs_;
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common::ObBitSet<common::OB_MAX_BITSET_SIZE> *dep_indices_;
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bool is_access_; // mark whether we are do project pruning for access exprs
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DISALLOW_COPY_AND_ASSIGN(ObRawExprCheckDep);
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};
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}
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}
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#endif // _OB_RAW_EXPR_CHECK_DEPENDENCY_H
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